Previously, previously, previously, previously, previously.
Hose in pants. What.
Nay, 'tis a surfeit of levity.
IMDb says the girl playing Mary Jane also was the girl who liked black coffee on Airplane!
It also says she seems to have vanished into oblivion.
This might help:
This short is shown every year as part of the MIT Lecture Series Committee's Science Fiction Marathon, along with Snookles the Baby Dragon and Bambi vs. Godzilla. They never get old :)